CBSE Class 12-commerce Answered
Find the total surface area of a cone whose
(1) bottom face is a circle with radius 2.25 cm and
(2) lateral face is a semi- circle with radius 4.5cm
Asked by sunilsaharan107 | 16 Dec, 2018, 04:57: PM
Expert Answer
Total surface area = surface area of lateral face + surface area of base
= (1/2)π×4.5×4.5 + π×2.25×2.25 = 47.71 cm2
Answered by Thiyagarajan K | 18 Dec, 2018, 01:12: PM
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